Sheaf-loader.



E. E. THOMPSON.

SHEAF LOADER.

3 SHEETS-SHEET I.

0 q a I I i q WITNESSES INVENTOR w By W AI/arnrys E. E. THOMPSON.

SHEAF LOAOER. APPLICATION FIILED JUNE 29, 1916.

1,227,343. 4 Patented May 22,1917.

3 SHEETS-SHEET 2.

INVENTOR Milena 1m: non-ms PZTERS 5a.. Imam-Limo wxsmm; ran. a. c,

E. E. THOMPSON.

SHEAF LOADER.

APPLICATION FILED JUNE 29,1916.

1,227,343. Patented M:1y22,1917.

' 3 SHEETS-SHEET s.

WITNESSES V INVENTOR ERS c0. pnomuma. WASHINGYDN. D c.

EARL EDMUND THOMPSON, OF WINNIPEG, MANITOBA, CANADA.

SHEAF-LOADER.

Specification of Letters Patent.

Patented May 22, 1917.

. Application filed June 29, 1916. Serial No. 106,667.

To all whom it may concern:

Be it known that I, EARL EDMUND THOMP- SON, of the city of WVinnipeg, inthe Province of Manitoba, Canada, have invented certain new and usefulImprovements in Sheaf- Loaders, of which the following is thespecification.

The invention relates to improvements in sheaf loaders and particularlyto what is commonly known as the pick-up part or nose of a sheaf loaderand the object of the invention is to provide a simply constructed,durable and efficient pickup for a sheaf loader which can be readilyadjusted to accommodate, working conditions and which has but few partsin its make-up, and those all arranged so that they can be readilyassembled and at small cost.

With the above principal object in view the invention consistsessentially on the arrangement and construction of parts hereinaftermore particularly described and later. pointed out in the appendedclaims, reference being had to the accompanying drawings in which Figure1 represents a side View of a sheaf loader equipped with my invention.

Fig. 2 represents an enlarged detailed face View of the outer side ofone of the pick-up chain wheels showing the controlling parts, certainadjacent parts being shown in vertical section.

Fig. 3 represents an end View of the forward end of the nose, thecentral portion thereof being broken away.

Fig. 4 represents an enlarged detailed vertical sectional view throughthe front end of the machine, the section being taken to show the mannerin which the joint is formed between the nose and the inclined elevator.

Fig. 5 represents a side view of one of the trip carrying plates.

In the drawings like characters of reference indicate correspondingparts in the several figures.

1 represents a main frame suitably mounted on front and rear sets ofcarriage wheels 2 and On this frame I erect suitably braced, varyinglength opposing pairs of uprights 4, 5, 6 and 7 which uprights carry aninclined conveyer 8 and side shields indicated at 9.

The; driving shaft of the conveyor is indicated at 10, this beingsuitably mounted in the bearings. carried the uprights 4.

The shaft 10 is supplied with a chain wheel 11 which is driven throughany suitable form of driving connection indicated at 12 from one of therear carriage wheels 3.

Immediately adjoining the upper end of the inclined conveyer I locate aside chute 13 to receive sheaves from the inclined conveyer and in asuitable location on the side of the machine I locate a platform 14 andan attendants seat 15.

I have not considered it necessary to give a detailed description of theabove parts of the machine as they are, with the exception of theconveyor, found on a great many machines already patented. Theparticular part which I consider new and for which I wish to obtainLetters Patent is the nose or pick-up part of the sheaf loader and asthis is closely associated with the conveyer I require that the conveyerbe built in a certain manner as shortly described to accommodate thepick-up which is indicated in a general manner by the reference numeral16.

To the side uprights of the machine I secure permanently parallel upperand lower opposing pairs of angle irons 17 and 18' which have theirhorizontal flanges turned inwardly. The lower ends of these angle ironsterminate in a location more or less directly above the front wheelswhere they are secured permanently to a pair of 0pposing side plates19and 20 which side plates carry a cross shaft 21 from which I swing thenose or pick-up 16.

The nose or pick-up embodies in its structure upper and lower opposingpairs of angle iron bars 22 and 23 connected by side bars 24 and 25 andhaving their horizontal flanges turned inwardly. To the upper ends ofthese latter bars I secure inner plates 26 and 27 disposed immediatelyto the inner sides. of the plates 19' and 20 and swung pivotally fromthe shaft 21. According to this construction the nose is pivotally swungfrom the shaft and in constructing the machine the adjacent ends of theangle bars 22 and 23 and those 17 and 18 must be spaced apart so that inthe movement of the nose they will clear.

Between the topangle bars 17 I locate a cross. carrier 28 which ispermanently secured to the under side of the inturned flanges of theangle irons. The lower end of this cross carrier projects beyond thelower ends of the angle irons 17 (see Fig.

4.)v and overlaps the uppper endof a second;

cross carrier 29 permanently secured to the underside of the in-turnedflanges of the angle irons 22.

From the above it will be obvious that I have really a continuous crosscarrier from the lower end of the nose to the top end of the convoyer,which carrier is broken only (as shown in Fig. 4) to allow for themovement of the nose when adjusted as later described. The carrier ispreferably formed from sheet metal. The nose is supplied with similarside shields 30 and 31 which are secured to the bars 24 and 25 and arereally a continuation of the top shields 9.

In this connection it is necessary to have the upper ends of the shields30 and 31 pass to the inner sides of the shields 9. The lower end of thenose carries a pair of similar permanent trip carrying side plates 32and 33 which are permanently bolted to the angle irons 22 and 23 and thesaid side plates provide the bearings for the lower conveyer shaft 34which it will be noticed projects beyond the side plates.

On the platform I locate a hand lever fitted with the usual hand latchand detent 37 operating over a quadrant 38 secured to the plat-form.This lever is secured by a pair of links 39 and 40 to a crank 41 securedto the end of the shaft 21 and the crank is in turn connected by meansof a tie rod 42 to the projecting end of the shaft 34.

From the above construction it will be obvious that one by manipulatingthe hand lever can raise or lower the forward end of the nose andaccordingly vary its height from the ground.

The shafts l0 and 34 are provided in the ordinary way with pairs ofchain wheels 43 and these chain wheels carry endless conveyer chains 44and 45 which lie normally on the iii-turned flanges of the angle ironsand are provided at suitable distances throughout their length withconnecting cross slats 46.

These chain wheels, chains and cross slats form the endless conveyerhereinbefore referred to and in connection with the chains it is to beunderstood that there is sufficient slack in them to allow for theslight tightening which will occur in the adjustment of the nose orpick-up. The lower pair of chain wheels 43 carry in the present instance3 equi-spaced rotatably mounted cross shafts 47. 48 and 49 which crossshafts are supplied each with a set of spaced prongs 50. Between theouter sides of the latter chain wheels 43 and the plates 32 and 33 andon opposite ends of the shaft 47, 48 and 49 I locate rollers 51, 52 and53 which rollers are permanently secured to the shaftand between therollers and the outer faces of the wheels 43 and on the shafts I haveplaced similar catch blocks 54, 55 and 56,

which blocks extend from the shafts in the opposite directions to theprongs.

Associated with the blocks I employ controlling dogs 57, 58 and 59 whichare pivotally secured as indicated at 60 to the outer faces of the chainwheels 43. The dogs are all similarly constructed being each suppliedwith a pair of spaced stops or lugs 61 and 62 and having their innersides slightly arched, as shown at 63 to form a guide. The dogs arenormally pressed toward the catch blocks 54, 55 and 56 by the action ofspiral springs 64 mounted on pins 65 extending from lugs 66 carried bythe chain wheels, it being understood that the pins are slidably enteredin openings or holes bored in the back faces of the controlling dogs.Each of the controlling dogs is provided with a heel 67 which, in theturning of the chain wheels 43, is designed to engage with and drag overan inwardly extending catch piece 68 projecting inwardly from each ofthe side plates 32 and 33. The plates 32 and 33 are fitted also withinwardly extending short length roller tracks 69 and 70, these tracksbeing arranged concentric to the shaft 34 and a different radii so thatin the turning of the chain wheels the rollers 51, 52 and 53 will berolled by frictional contact with the track 70 in one direction and byfrictional contact with the track 69 in the opposite direction.

The particular positions which the catch piece 68, the roller tracks 69and 70, the controlling dogs 57, 58 and 59 and the catch blocks 54, 55and 56, have in respect to one another is best shown in Fig. 2 where itwill be observed that the upper prongs are locked in the uprightposition by the lugs 61 and 62 of the dog 58, the roller 52 is about toengage with the roller track 7 O as is also the catch piece with theheel 67 of the dog 58, the roller 51 is rolling on the track 69 and thelugs 61 and 62 of the dog 57 are clear of the catch block 54 and thecatch block 56 is locked by the lugs of the dog 59.

By closely studying this figure it will be observed that as the prongsare being passed from a lowermost position to an upper position, whichis actually the interval when they are picking up the sheaves, they arepositively locked against rotation by the lugs of the dogs engaging thecatch blocks. However, after the sheaves have been brought up by theprongs to the position where they are delivered on to the conveyer itwill be obvious that the catch piece 68 will trip the up-coming dog byengagement with the heel thereof and unlock the catch block and thatalmost coincident with this action the roller of the then top shaft,Wlll be rolled by engagement with the tracks 70 to throw back the prongsand let them clear both the slats of the conveyer and the lower end ofthe cross carrier 29.

Further it will be apparent that after the prongs have been thrown backto clear the aforesaid parts they will again be thrown ahead by therollers engaging with the track 69 and will bebrought by the action ofthis track again into the original sheaf catching position, in whichposition they are automatically locked by the lugs of the adjacent dog,this occurring coincident with the clearance of the roller from thetrack 69.

From the above it will be obvious that the prongs are at all timespositively under control and that they are positively locked when thesheaf is being picked up and delivered to the conveyer.

WVhat I claim as my invention is 1. A sheaf loader pick up, incombination with an endless conveyerand chain wheels comprising a sheafloader pick up comprising a pair of chain wheels, spaced cross shaftsrotatably mounted in the pair of chain wheels, a set of prongs extendingfrom each of the cross shafts, similar rollers secured to the ends ofthe cross shafts, an adjacent conveyer, tracks carried by the lower endof the conveyer frame and engageable with the rollers and adapted torotate the rollers, one in the forward direction and the other in thereverse direction and means for looking the shafts against rotationduring the interval that the rollers are disengaged from the tracks. 7

2. A sheaf loader pick up in combination with an endless conveyerincluding a frame, and chain Wheels for the conveyer, comprising asheaf'loader pick up comprising a pair of chain wheels, spaced crossshafts rotatably mounted in the pair of chain wheels, a set of prongsextending from each of the cross shafts, similar rollers secured to theends of the cross shafts, an adjacent conveyer, side plates permanentlysecured to the lower end of the conveyer frame, short length rollertracks extending inwardly from the side plates and disposed at differentradii and adapted in the rotation of the chain wheels to engage with therollers and effect, one a reverse rotation of the rollers and the otherthe forward rotation of the rollers and means for locking the shaftsagainst rotation during the interval that the rollers are clear of thetracks.

8. A sheaf loader pick up in combination with an endless conveyerincluding a frame, and chain Wheels for the conveyer, com- Oopies ofthis patent may be obtained for prising a sheaf loader pick upcomprising a pair of chain wheels, spaced cross shafts rotatably mountedin the pair of chain wheels, a set of prongs extending from each of thecross shafts, similar rollers secured to the ends of the cross shafts,an adjacent conveyer, side plates permanently secured to the lower endof the conveyer frame, short length roller tracks extending inwardlyfrom the side plates and disposed at different radii and adapted in therota tion of the chain wheels to engage with the rollers and effect, onea reverse rotation of the rollers and the other a forward rotation ofthe rollers, catch blocks secured permanently to the shafts, pivotedspring pressed dogs carried by the chain wheels and normally engagingwith the catch blocks to lock the same against movement and means fortripping the dogs to release the catch blocks at the instant the rollersengage the roller tracks.

4%. A sheaf loader pick up in combination with an endless conveyerincluding a frame, and chain wheels for the conveyer, com prising asheaf loader pick up comprising a pair of chain wheels, spaced crossshafts rotatab'ly mounted in the pair of chain wheels, a set of prongsextending from each of the cross shafts, similar rollers secured to theends of the cross shafts, an adjacent conveyer, side plates permanentlysecured to the lOWer end of the conveyer frame, short length rollertracks extending inwardly from the side plates and disposed at differentradii and adapted in the rotation of the chain wheels to engage with therollers and effect, one a reverse rotation of the rollers and the othera forward rotatioii of the rollers, catch blocks secured permanently tothe shafts, pivoted spring pressed dogs carried by the chain wheels andnormally engaging with the catch blocks to lock the same againstmovement, said dogs being fitted with extending heels and a catch pieceextending inwardly from each of the side plates and engageable with theheels of the dogs and designed to disengage the dogs from the catchblock at the instant the rollers engage the tracks.

Signed at Winnipeg, this 8th day of April 1916.

EARL EDMUND THOMPSON.

In the presence of- G. S. RoxBUneH, ROLAND Fos'rnn.

five cents each, by addressing the Commissioner of Patents. Washington,D. G.

